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Diffstat (limited to 'internal/nametransform/diriv.go')
| -rw-r--r-- | internal/nametransform/diriv.go | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/internal/nametransform/diriv.go b/internal/nametransform/diriv.go index f980a04..527ccce 100644 --- a/internal/nametransform/diriv.go +++ b/internal/nametransform/diriv.go @@ -3,6 +3,7 @@ package nametransform import ( "bytes" "io" + "log" "os" "path/filepath" "strings" @@ -73,10 +74,16 @@ func fdReadDirIV(fd *os.File) (iv []byte, err error) { return iv, nil } -// WriteDirIV - create diriv file inside "dir" (absolute ciphertext path) -// This function is exported because it is used from pathfs_frontend, main, -// and also the automated tests. +// WriteDirIV - create diriv file inside of the specified directory. If dirfd +// is nil "dir" should be the absolute path to the directory. If dirfd != nil +// "dir" should be a path (without slashes) relative to the directory +// described by "dirfd". This function is exported because it is used from +// pathfs_frontend, main, and also the automated tests. func WriteDirIV(dirfd *os.File, dir string) error { + // For relative paths we do not expect that "dir" contains slashes + if dirfd != nil && strings.Contains(dir, "/") { + log.Panicf("WriteDirIV: Relative path should not contain slashes: %v", dir) + } iv := cryptocore.RandBytes(DirIVLen) file := filepath.Join(dir, DirIVFilename) // 0400 permissions: gocryptfs.diriv should never be modified after creation. |